code: def test_bleu_computed_with_zero_counts(self, device: str):
      self.metric.reset()
      assert self.metric.get_metric()["BLEU"] == 0
  
file_path: allennlp/tests/training/metrics/bleu_test.py
imports: from typing import Any, Dict, List, Tuple, Union
  import math
  from collections import Counter
  import torch
  from torch.testing import assert_allclose
  from allennlp.common.testing import AllenNlpTestCase, multi_device, global_distributed_metric, run_distributed_test
  from allennlp.training.metrics import BLEU
  from allennlp.training.util import ngrams, get_valid_tokens_mask
label_desc: Use image node_id 5 for calling the BleuTest obj's underlying member method code with example usage: obj.test_bleu_computed_with_zero_counts(device) without return types